Factory Direct Throttle Valve Body 280750151 For Benz M274 M270 Engines1. Product Attribute Introduction This is an Electronic Throttle Body (ETB) designed for Mercedes-Benz vehicles. It is a mechatronic component precisely controlled by the Engine Control Unit (ECU), acting as a key actuator for managing the engine's air intake.Product Type: Electronic Throttle Body (ETB)Core Function: Regulates engine air intake volumeControl Method: Electronically controlled by the Engine